What is the 1st stable version of Acrobat when using the batch OCR feature? I have Acrobat 9.2.0 and it crashes when I try to OCR a large number of documents.
As I recall, Batch Sequences came with Acrobat 8 Pro.
Using it or Acrobat 9 / X Pro I've not encounter problems using a Batch Sequence / Action (Acrobat X Pro) for moderately sized groups of PDF (i.e., no lack of "stability").
When doing this on a desktop/laptop with any application intended as a "desktop application" the limiting factor is the local machine's resources.
For the desktop/laptop what does help is dumping all unnecessary processes.
For those "large" collections of PDF you want a server application.